Why did the woman drop by George’ s Garage?

W:Hey, David, I just dropped off my car to get an oil change at George’s Garage, and I didn’t see your car there. Didn’t you say that you were going to take your car in to get your winter tires put on this morning?
M:Oh I didn’t take my car there. I ended up taking it to another place.
W:Really? Why did you do that? I thought you said you were happy with the work they did to your car the last time you took it in.
M:I know, but I found a better and cheaper place near my apartment. Plus, the mechanic that used to take care of my car at George’s Garage doesn’t work there anymore. He apparently started his own shop downtown somewhere.
Number 44.Why did the woman drop by George’s Garage?
Number 45.Why did the man take his car to another shop?
Number 46.According to the man,what happened to his mechanic at George’s Garage?